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Module 2: EXAM
| Question | Answer |
|---|---|
| How many lobes does the right lung have? | Three lobes |
| Air (and not food) pass in which of the following areas: | Nasopharynx |
| In the respiratory system, gas exchange occurs in the: | B & D (respiratory bronchioles & pulmonary alveoli) |
| Label the following five items from the diagram: | |
| Label b: Oral cavity Label D: Epiglottis Label E: Glottis Label F: Trachea Label G: Esophagus | |
| Explain what happens to the soft palate during swallowing. Why? | The upward movement of the soft palate prevents food or liquid from entering the nasal passages during swallowing. |
| Explain at least 2 differences between Type I and Type II alveolar cells. | Type I form the very thin simple squamous epithelium of the alveoli in junction with capillaries. Make up roughly 95 of alveolar epithelial cells. Type II produce and secrete pulmonary surfactant which is needed throughout the alveolar surface to keep the |
| True / False: Negative pressure is used to move air into the lungs. | True |
| True / False: During inhalation the diaphragm contracts to pull the lungs open. | True |
| True / False: During inhalation the rib cage is lowered pull the lungs open. | False |
| True / False: As the thoracic cavity expands and lung volume increases, the density of gases filling the lungs increases. | False |
| True / False: When the diaphragm rises, thoracic pressure increases and air naturally flows out of the lungs. | True (Air naturally flows out of the lungs because of the pressure difference) |
| Boyle's law states that gas volume is: | Inversely proportional to pressure |
| Which one of the following tracheal cartilages are paired? | Arytenoid |
| Which cells are most abundant within the alveoli? | Macrophages |
| Which one of the following is not true of the respiratory physiology? | Tidal volume is the maximum amount of air able to be inhaled beyond normal inhalation |
| Which one of the following is true of the respiratory physiology calculations? | Functional Residual Capacity (FRC) = RV + ERV |
| True / False: Typical respiratory epithelium contains cells where only some of the pseudostratified columnar cells touch the basement membrane. | False: (all pseudostratified cells touch the basement membrane) |
| True / False: The vestibule is the most external portion of the nasal cavity. | True |
| True / False: The vestibule is lined with typical respiratory epithelium | False:(stratified squamous epithelium is found in the vestibule). |
| True / False: The fossaeis another name for the pleural cavities. | False |
| True / False: The bronchioles are surrounded by capillaries for gas exchange | False |
| Matching: - The pleural space fills with air, put or blood. - This condition results from fluid - filled alveoli. - This condition results in a loss of alveoli. - This hereditary illness results in excess mucus. A. EMPHYSEMA B. CYSTIC FIBROSIS C. PULMONA | - The pleural space fills with air, pus or blood. D. PLEURISY - This condition results from fluid - filled alveoli. C. PULMONARY EDEMA - This condition results in a loss of alveoli. A. EMPHYSEMA - This hereditary illness results in excess mucus. BCYST |
| The pressure of 3 gases equals 1 atmosphere. What is the partial pressure of oxygen (in mmHg) if nitrogen is 500 mmHg and carbon dioxide is 150 mmHg? | 1 atm = 760 100 mmHg + 150 mmHg = 250 mmHg 760 - 250 mmHg = 510 mmHg OR 760 - 100 - 150 = 510 mmHg |
| Which part of the respiratory system is surrounded by capillaries? Why? | The alveoli is surrounded by capillaries. This is where oxygen passes from the air into the blood and carbon dioxide passes from the blood into the lungs. |
| Explain what helps to maintain constant temperature within the lungs. Why is it important for effective gas exchange? | Incomplete ventilation helps to maintain a constant temperature within the lungs. The increased temperature allows for greater gas exchange. |
| From widest to narrowest, the branches of the bronchial tree are: | Primary bronchi,secondary bronchi, tertiary bronchi, bronchioles. |
| In gas exchange (external respiration) | Oxygen diffuses from alveoli into capillaries, carbon dioxide diffuses from capillaries into alveoli. |
| The purpose of the cells are the primary immune defense of the alveoli: | Alveolar macrophages |
| Muscular dystrophy is a neuromuscular disease which restricts the lungs from fully expanding due to muscular weakness. If a person is diagnosed with muscular dystrophy: 1) which of the following statements regarding pulmonary function would be true? 2) Ex | A. I spiratory capacity would be abnormally low. Vital capacity would decrease because there is a decreased ability to bring in as much air compared to normal values because of muscular weakness.inspiratory Capacity (IC) = TV + IRV or VC - ERV Decreased V |